Profile Curvature derived from 1" SRTM DEM-S

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About this Collection

Profile Curvature derived from 1" SRTM DEM-S

Profile curvature is the rate of change of potential gradient down a flow line and represents the changes in flow velocity down a slope. It is significant for flow acceleration, erosion/deposition rates and geomorphology. The profile curvature product was derived from the Smoothed Digital Elevation Model (DEM-S; ANZCW0703014016), which was derive... more

Environmental Management Land Capability and Soil Degradation Landscape Ecology Natural Resource Management Soil Sciences not elsewhere classified

11 Feb 2000

22 Feb 2000

CSIRO Enquiries
1300 363 400

Profile Curvature LAND Topography Models ECOLOGY Landscape TERN_Soils Land Surface Australia

Source data 1. 1 arc-second SRTM-derived Smoothed Digital Elevation Model (DEM-S; ANZCW0703014016). 2. 1 arc-second profile curvature product 3. 3 arc-second resolution SRTM water body and ocean mask datasets Profile Curvature calculation Profile curvature was calculated from DEM-S using the finite difference method (Gallant and Wilson, 2000). The different spacing in the E-W and N-S directions due to the geographic projection of the data was accounted for by using the actual spacing in metres of the grid points calculated from the latitude. The profile curvature calculation was performed on 1° x 1° tiles, with overlaps to ensure correct values at tile edges. The 3 arc-second resolution version was generated from the 1 arc-second profile curvature product. This was done by aggregating the 1” data over a 3 x 3 grid cell window and taking the mean of the nine values that contributed to each 3” output grid cell. The 3” profile curvature data were then masked using the SRTM 3” ocean and water body datasets. References Gallant, J.C. and Wilson, J.P. (2000) Primary topographic attributes, chapter 3 in Wilson, J.P. and Gallant, J.C. Terrain Analysis: Principles and Applications, John Wiley and Sons, New York.

Access to this data has been made possible by the Terrestrial Ecosystem Research Network (TERN), supported by the Australian Government through the National Collaborative Research Infrastructure Strategy and the Super Science Initiative.

Creative Commons Attribution 4.0 International Licence

CSIRO (Australia)

Gallant, John; Austin, Jenet (2012): Profile Curvature derived from 1" SRTM DEM-S. v2. CSIRO. Data Collection.

All Rights (including copyright) CSIRO 2012.

The metadata and files (if any) are available to the public.

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Location Details

10°0′0″ S

44°0′0″ S

154°0′0″ E

113°0′0″ E


More about this Collection

John Gallant

Terrain Analysis Research Team Leader

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About this Project

1181.2 TERN Facility No9 InfoGrid GRUNDY

The Soil and Landscape Grid of Australia is a comprehensive fine spatial resolution grid of functional soil attributes and key landscape features across Australia. The landscape attributes are derived from the data collected by the Shuttle Radar Topography Mission, whilst the soil attribute surfaces are modelled from existing soils information. The... more

John Gallant

National Elevation and Terrain Datasets

SRTM-derived elevation and terrain covariate datasets at 1 second or 3 second resolution


John Gallant

Jenet Austin

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